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- W2896580246 abstract "Palladium selenides have attracted considerable attention because of their intriguing properties and wide applications. Motivated by the successful synthesis of Pd2Se3 monolayer (Lin et al., Phys. Rev. Lett., 2017, 119, 016101), here we systematically study its physical properties and device applications using state-of-the-art first principles calculations. We demonstrate that the Pd2Se3 monolayer has a desirable quasi-direct band gap (1.39 eV) for light absorption, a high electron mobility (140.4 cm2V−1s−1) and strong optical absorption (~105 cm−1) in the visible solar spectrum, showing a great potential for absorber material in ultrathin photovoltaic devices. Furthermore, its bandgap can be tuned by applying biaxial strain, changing from indirect to direct. Equally important, replacing Se with S results in a stable Pd2S3 monolayer that can form a type-II heterostructure with the Pd2Se3 monolayer by vertically stacking them together. The power conversion efficiency (PCE) of the heterostructure-based solar cell reaches 20%, higher than that of MoS2/MoSe2 solar cell. Our study would motivate experimental efforts in achieving Pd2Se3 monolayer-based heterostructures for new efficient photovoltaic devices." @default.
- W2896580246 created "2018-10-26" @default.
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- W2896580246 date "2018-10-14" @default.
- W2896580246 modified "2023-10-18" @default.
- W2896580246 title "Physical Properties and Photovoltaic Application of Semiconducting Pd2Se3 Monolayer" @default.
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- W2896580246 doi "https://doi.org/10.3390/nano8100832" @default.
- W2896580246 hasPubMedCentralId "https://www.ncbi.nlm.nih.gov/pmc/articles/6215269" @default.
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